In reference to Hobie Dog; don't go in Cape Fear but go in at Morehead City/Beaufort inlet. The ICW from Snow's Cut/Carolina Beach to Morehead City is a lot of no wake, low bridges, shallow narrow canal and traffic. From Morehead to Norfolk is clear and open pretty much the whole way.
The Ga and SC ICW is twisty turny with little actual miles being made. (low VMG) Run offshore as much as possible.